Undescended Testicles
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Overview

What is an undescended testicle?

Testicles are part of the male body. They make male hormones and sperm. Usually both testicles are inside the scrotum. While male babies are still growing inside the uterus, their testicles are inside their abdomen. The testicles usually move down into the scrotum just before or just after birth. An undescended testicle is one that did not move down into the scrotum.

Undescended testicles are common in male babies. Up to 30% of boys born early and 3% to 5% of boys born on time have at least one undescended testicle. If your newborn baby has an undescended testicle, it will usually move down on its own in the first few months of life. If this doesn't happen after 3 or 4 months, it may need to be treated by a doctor.